It's easy to spot the 'nerds'... Just attend your average commercial hi-fi show and witness the folk walking around with carrier bags full of leaflets, who NEVER buy anything, going into every room and annoying all the exhibitors with their squeaky voices, asking them achingly anal questions, which make them feel like telling the sad nerds to fuck off!
They look a bit like this, only 40 years older (all that's missing is a brown anorak and a somewhat 'pained' expression):
If one should ever follow you, run while you can!
Marco.